Feat: Shipping functionalities redesign, elta courier integration, commenting out acs since no integration can happen, flow updates

src/Shipping/Contracts/SupportsVoucherLookup.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Modules\Core\Shipping\Contracts;
+
+use Modules\Core\Shipping\DTOs\CarrierVoucher;
+
+/**
+ * A carrier that can look up a single voucher by number — so a voucher can
+ * be found and linked to an order before the next list sync.
+ */
+interface SupportsVoucherLookup
+{
+    public function lookupVoucher(string $voucherNumber): ?CarrierVoucher;
+}